Understanding Seniors' Perceptions and Stereotypes of Aging

Research suggests there is a connection between stereotypes, beliefs, and behavior in older individuals. To explore this link of stereotypes affecting beliefs and beliefs affecting behavior, we interviewed young (age 60 to 75) seniors in an effort to further examine these relationships. Semistructured qualitative interviews were conducted with 20 seniors. Questions focused on the broad themes of aging stereotypes and attitudes towards active living. Responses from the participants indicated the variety of opinions and beliefs seniors hold about the aging process. Intriguing results emerged on the topic of role models. Participants often had someone in their lives who represented what it means to age successfully. Generally, this was an individual older than themselves, active, vigorous, and illustrative of the high quality of life that is possible into a very late age. In addition, these individuals provide a direct contrast to the most negative stereotypes of aging.     

Design Issues in the Use of Robots as Cognitive Enhancement Aids

Abstract

Robotic manipulators are being used in an investigation of their potential as effective classroom learning aids when used by severely orthopaedically disabled children to manipulate educational materials and to play games. During the course of the design and development of a prototype robotic system for educational use, several issues have surfaced that constitute serious considerations in the process. Of particular importance are issues involving accessibility, software design, curriculum integration and specific research questions involving spatial visualisation. Performance data from previous investigations has shown that learning to use robots can be easily accomplished, and that the consequent learning is remarkably resistant to decay over time.     

What Works: Using Curriculum and Pedagogy to Increase Girls' Interest and Participation in Science

This article identifies instructional strategies, curricula, and organizational structures in the research literature that have been successful in encouraging girls' participation and achievement in science: science instruction in pre-kindergarten and kindergarten, relevant curricula that address girls' interests and provide opportunities for genuine inquiry and tinkering experiences, greater emphasis on physical science and the use of computers, integration of reading and writing in science, attention to how groups are formed in classrooms, activities that build self-efficacy, appropriate role models, messages that science is for everyone, and student-centered teaching. Special attention is given to the needs of children in preschool and kindergarten. In addition, research on the impact of single-sex classrooms and grouping is reviewed, along with the use of children's fictional literature to teach science. Implications derived from research literature include changes in what is taught, how it is taught, how teachers are prepared, and how these changes are paid for.     

Book reviews

Richard Cox, Sport — A Guide to Historical Sources in the UK (London, Sports Council, 1983). Pp.vii + 61. £8.00 ISBN 0 906577 34 9.

P.B. Munsche, Gentlemen and Poachers: The English Game Laws 1671–1831 (Cambridge, CUP, 1983). Pp.x + 255. £18.50. ISBN 0 521 23284 8.

Garry Whannel, Blowing the Whistle: The Politics of Sport (London, Pluto Press, 1983). Pp. 117. £2.50. ISBN 0 86104 508 4.

David Smith and Gareth Williams, Fields of Praise: The Official History of the Welsh Rugby Union 1881–1981 (Cardiff, University of Wales Press, 1980). Pp.xii + 505. £12.95. ISBN 0 7083 07663.

John Arlott, Jack Hobbs — Profile of ‘The Master’ (London, John Murray and Davis‐Poynter, 1981). Pp. 144. £6.95. ISBN 07195 3886 6 (John Murray) and 0 7067 0214 X (Davis‐Poynter).

Richard S. Gruneau, Class, Sports and Social Development (Amherst, The University of Massachusetts Press, 1983). Pp.x + 213. $18.50 and $9.50. ISBN 0 87023 387 4 and 0 87023 388 2.

R. Roberts, Jack Dempsey: The Manassa Mauler (London, Louisiana State University Press 1984). Pp.314. £8.50. ISBN 8071 1161 9.

Richard Cashman and Michael McKernan (eds.), Sport: Money, Morality and the Media (Kensington, NSW, New South Wales University Press, 1981). Pp. 343. ISBN 0 86840 160 9.     

Towards a unified understanding of relative age effects

Abstract

When athletes are placed into annual age groups to organize and coordinate sport participation, certain (dis)advantages occur as a result of the subtle age differences within these groups. These differences, termed “relative age effects”, have been consistently related to youth and adult sport attainment. However, there has been a lack of consistency in the terminology used in this area of research. In this paper, we consider the operational terms used in relative age research, discuss appropriate applications of terminology, and suggest directions for future research. Importantly, we argue for a unified understanding of what “relative age” means, stressing the need for clarity in directing future advances in the field.     

Age-related differences in repeated-sprint ability in highly trained youth football players

Abstract

In this study, we investigated the age-related differences in repeated-sprint ability and blood lactate responses in 134 youth football players. Players from the development programme of a professional club were grouped according to their respective under-age team (U-11 to U-18). Following familiarization, the participants performed a repeated-sprint ability test [6 × 30-m sprints 30 s apart, with active recovery (2.0–2.2 m · s^?1) between sprints]. The test variables were total time, percent sprint decrement, and post-test peak lactate concentration. Total time improved from the U-11 to U-15 age groups (range 33.15 ± 1.84 vs. 27.25 ± 0.82 s), whereas no further significant improvements were evident from U-15 to U-18. No significant differences in percent sprint decrement were reported among groups (range 4.0 ± 1.0% to 5.5 ± 2.1%). Post-test peak lactate increased from one age group to the next (range 7.3 ± 1.8 to 12.6 ± 1.6 mmol · l^?1), but remained constant when adjusted for age-related difference in body mass. Peak lactate concentration was moderately correlated with sprint time (r = 0.70, P > 0.001). Our results suggest that performance in repeated-sprint ability improves during maturation of highly trained youth football players, although a plateau occurs from 15 years of age. In contrast to expectations based on previous suggestions, percent sprint decrement during repeated sprints did not deteriorate with age.     

Human handedness in interactive situations: Negative perceptual frequency effects can be reversed!

Abstract

Left-handed performers seem to enjoy an advantage in interactive sports. Researchers suggest this is predominantly due to the relative scarcity of left-handers compared with right-handers. Such negative frequency-dependent advantages are likely to appear in inefficient game-play behaviour against left-handed opponents such as reduced ability to correctly anticipate left-handers' action intentions. We used a pre–post retention design to test whether such negative frequency-dependent perceptual effects can be reversed via effective training. In a video-based test, 30 handball novices anticipated the shot outcome of temporally occluded handball penalties thrown by right- and left-handed players. Between the pre- and post-tests, participants underwent a perceptual training programme to improve prediction accuracy, followed by an unfilled retention test one week later. Participants were divided into two hand-specific training groups (i.e. only right- or left-handed shots were presented during training) and a mixed group (i.e. both right- and left-handed shots were presented). Our results support the negative frequency-dependent advantage hypothesis, as hand-specific perceptual training led to side-specific improvement of anticipation skills. Similarly, findings provide experimental evidence to support the contention that negatively frequency-dependent selection mechanisms contributed to the maintenance of the handedness polymorphism.     

Theoretical Modeling of Grip Firmness during Ball-Racket Impact

Abstract

This study was undertaken to establish theoretical bases for the experimental results reported by Baker and Putnam (1979), and Walanabe, Ikegami and Miyashita (1979), concerning grip firmness on a tennis racket and its effect on the ratio of post- to pre-impact ball velocity. The model predicted that, for central impacts, there was no change in the ball velocity ratio when a regular tennis racket was tightly clamped at the grip or allowed to freely stand on its butt. To validate the model further, alterations were made to two parameters of the racket—a tennis racket was modified to increase the stiffness, and a racketball racket was used to simulate a shortened tennis racket. Multiple exposure photographs were taken of balls striking the center of the rackets under the two extremes of grip firmness. Measurements were taken from enlargements of these photographs in order to calculate the horizontal component of post- to pre-impact ball velocity. It was found that shortening the length and greatly increasing the stiffness was required before the effect of grip firmness was noticeable.